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For sale
  • Price cut: $295K (9/24)
    $6,700,000

    18 Horsemill Rd, Water Mill, NY 11976

    4beds
    4,193sqft
    Loading
    Single Family Residence
    Built in ----
    -- sqft lot
    $6,381,800 Zestimate®
    $1,598/sqft
    $-- HOA

    What's special

    Central airThird bedroom and bathroomCentral vacEntry hallGaggenau oven and dishwasherTwo drivewaysEat-in kitchen
    In Watermill, one half mile from Mecox Bay, a unique opportunity to be only the third owner of a 1937 farmhouse on a farmer's acre overlooking 70 unobstructed acres of pristine farmland.The first level consists of an entry hall, one bedroom, one bathroom, office, kitchen, mud room, laundry roon attached to a two car garage, living room with wood burning fireplace and large family room adjacent to a patio.A second level has a large primary suite with another wood burning fireplace and full ensuite bath. There is a second bedroom with full ensuite bath as well as a third bedroom and bathroom.The eat-in kitchen has a Traulson refridgerator and Gaggenau oven and dishwasher. The house has central air, central vac and a security system. There is a full unfinished basement with a McClain furnace, two hot water heaters, a sump pump and a smasrt water shut-off system.The lush exterior is full of mature trees and plantings as well as a secluded 18 by 45 foot inground gunite pool.The house is on a corner lot with double setbacks and two driveways with room for further expansion.
    52 days
    488
    15

    Zillow last checked:

    Listed by:

    Robert Ross,

    Robert Ross - Real Estate Broker 917-757-5921

    Source: Out East,MLS#: 397519

      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 4
      • Bathrooms: 4
      • Full bathrooms: 4
      Rooms
      • Room types: Family Room, Laundry, Office
      Cooling
      • Central Air
      Features
      • Basement: No
      • Has fireplace: Yes
      Interior area
      • Total structure area: 4,193
      • Total interior livable area: 4,193 sqft

      Property

      Parking
      • Parking features: GarageAttached
      • Has attached garage: Yes
      Features
      • Stories: 2
      • Has private pool: Yes
      Details
      • Parcel number: 0900116000100015000

      Construction

      Type & style
      • Home type: SingleFamily
      • Property subtype: Single Family Residence
      Condition
      • New construction: No

      Community & HOA

      Location
      • Region: Water Mill

      Financial & listing details

      • Price per square foot: $1,598/sqft
      • Tax assessed value: $3,245,700
      • Date on market: 8/29/2026
      • Lease term: Contact For Details

        Estimated market value

        $6,381,800

        $6.06M - $6.70M

        Not available

        Price history

        DateEventPrice
        9/24/2026Price change$6,700,000-4.2%$1,598/sqft
        Source: Out East #397519 Report a problem
        8/29/2026Listed for sale$6,995,000$1,668/sqft
        Source: Out East #397519 Report a problem
        8/21/2026Listing removed--
        Source: Owner Report a problem
        7/27/2026Listed for sale$6,995,000$1,668/sqft
        Source: Owner Report a problem

        Public tax history

        YearProperty taxesTax assessment
        2025-- $3,245,700
        2024-- $3,245,700
        2023-- $3,245,700
        2022-- $3,245,700
        2021-- $3,245,700 -3.6%
        2020-- $3,366,700
        2019-- $3,366,700 +2.5%
        2018-- $3,285,600
        2017$14,455 $3,285,600
        2016-- $3,285,600
        2015-- $3,285,600
        2014-- $3,285,600
        2013-- $3,285,600
        2012-- $3,285,600
        2011-- $3,285,600
        2007$13,584 +3.8%$3,285,600 +32.1%
        2005$13,092 +65.4%$2,486,871 +11138.6%
        2004$7,916 +5.1%$22,128
        2003$7,532 +2.9%$22,128
        2002$7,318 $22,128
        Find assessor info on the county website

        Monthly payment

        Estimated monthly payment$1,822
        All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
        HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
        See how much you could borrow to make a competitive offer.

        Climate risks

        Neighborhood: 11976

        Getting around

        15 / 100
        Car-Dependent
        28 / 100
        Somewhat Bikeable

        Nearby schools

        GreatSchools rating

        A local agent can set up tours, give advice and negotiate with sellers.

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